One issue is what can be observed about Actor systems.

The first thing he observed about this man was his teeth.

Every day, he observes and learns more about life in the city.

They were observed in about 3 percent of the galaxies surveyed.

As you observe about your neighbors, it is predictable that you'll face similar problems in the future.

Projects begin with teachers observing and questioning children about the topic of interest.

Measurement is a process that uses numbers to describe things based on what we can observe about them.

"Whatever I observed about America while growing up was from a different perspective than other kids my age."

Might it even be a parody of something someone has already observed about Shields's work?

Ms. Wan was observed for about an hour after the procedure.